Closure for coke oven chambers



June 16,1931. c. OTTQ -1,810,495

CLOSURE FOR COKE OVEN CHAMBERS Filed Nov. 21, 1927 fay 9 /a2/' a f a m //////4 t U 6 d 3 i e n 0 I 4 v u/z v 'm/e' 6 A 7701mm y 4 Patented June 16, 11

CARL OTTO, OF ESSEN-RUHR, GERMANY cnosnnn FOR ooxE ovmr CHAMBERS Application filed November 21, 1927, Serial No. 234,851, and in Germany November 26, 1926.

The invention relates to self-sealin coke oven doors, in which a sealing plate w ich 1S elastic such as a diaphragm, is arranged on the door frame, which plate is adapted to be pressed against a sealing frame arranged on the outer door aperture. The object of my invention is to improve this known manner of sealing coke oven chambers in order to provide. a gastight closure; the door frame being fixed, in its position on the bnckstays of the oven by clamping, and adjusting means being provided, which allow the adjustment of the sealing plate independently of the main clamping means. This arrangement enablesthe sealing pressure to be distributed on the entire circumference of the sealing plate in a completely uniform manner, and local leakages or over-stresses to be compensated for, without it bein necessary to readjust in any way the main c amping means. This clamping means may be of an extremely simple construction, so that it may be a lied and withdrawn in a very short time. he invention thus offers a coke oven door which is very easy to operate and secures a perfect sealing effect. This is a particular advantage of the door according to my invention as compared with hitherto known self-tightening doors,

-,in which the adjusting of the fpacking means is only obtained at the cost 0 simple opera- 5 :tion.

,In order to allow my invention to be more easily understood, a preferred embodiment of same is illustrated by way of example in the drawings which accompany and form part of this specification. In the drawings:

Fig. 1 is a horizontal section on the line 1-1 of Figure 2.

Fig. 2, is an elevation showing the parts in place in the chamber aperture.

Fig. 3 is a detail view showing the screw bolts for adjustably pressing the elastic sealing plate against the sealing frame.

Figure 4 is a detail cross section of the preliminary pressure means.

Referring to these figures, the coke oven door,- which is designed in the usual manner as a stopper door, has an outer frame a that carries the stopper a of refractory material,

.and abutting sealing surfaces a adapted to abut on corresponding surfaces 5 of the stationary door frame b. The frame a has mounted on it a diaphragm-like elastic sealing plate 0 which, when, the door is closed, abuts on a sealing frame d arranged on the ed qe of the outer chamber aperture, the frame (I 'eing preferably provided with an acute sealing edge d Cross bars 6 are fixed on ribs (1 of the door frame 0 whichbars carry a frame 7 disposed opposite the sealing edges (1. Presser screw bolts 9 are arranged on the frame f around its perimeter at suitable distances apart, and constitute an adjusting means which abut with their free ends on a presser frame It fastened on the sealing plate 0, (see Figure 3) or, if frame h is dispensed with abut immediately on this plate itself.

The clamping of the door frame a may) be ars effected in a known manner by the cross 6, which are rigidly fixed on frame a, being held in their position relatively to the oven' chamber by wedges k and other cross bars n resting in suitable h'oles provided in the buck stays m. To relieve the pressure bolts g, from load rigid projections such as presser pieces 0 may be arranged on the bars (2 of frame I which pieces permanently abut on the presser frame h, whereby a certain relimin)ary pressure may be obtained (see ig ure'4 \Vhen the door is to be inserted, it is slid into the aperture of the chamber, until the surfaces 11 of the door abut on the corresponding surfaces 6 of the stationary door frame I). 'lhereupon the cross bars n are inserted in the respective holes of the buckstays m and the wedges is are driven between the bars n and the bars e rigidly fixed on the door frame (1, whereby the door is clamped and closed. The diaphragmdike elastic tightening plate-0 is therebyurged against the sealing edge al of the frame a? by means of the presser pieces 0' andpresser bolts '9. The desired sealing effect is thus obtained.

Now, when local leakages or overstresses of the packing occur due to heat stresses or warping, merely the presser bolts 9 need to be adjusted correspondingly, without the secure clampingof the door being influenced thereby in any way. By this arrangement and by limiting the insertion of the door in the chamber aperture by the abutting surfaces a and 6 an extraordinary low wear of the packin means, plate and frame d is obtained. I or, accordin to my invention, the plate a and frame seal the door, whilst the clamping pressure is taken up by the strong bars eaand the door frame a. A notable relief of the. packing means from load is also obtained by this :11- ran ement. 1

aving thus described the invention it V will be understood that changes may be made in carrying the invention into effect, without "departing from the principle thereof; I

What I claim and desire to secure by Letters Patent, is z- 1. In a coke oven, a stationary door frame, a door body, abutting sealing surfaces on said door frame and said door body, a stationary sealing frame mounted adjacent to the door frame and provided with an abutting sealing surface, an elastic sealing plate arranged on said door body and adapted to engage with said last-named sealing surface, clamping means adapted to close the door and to press said door body and said sealing plate against the respective abutting and sealing surfaces, and means for transmitting the pressure exertedby said clamping means to said sealing plate and to said door body.

2. In a coke oven, a stationary door frame, a door body, abutting sealing surfaces on said door frame and said door body, a stationary sealing frame mounted adjacent to the door frame and provided with an abutting sealing surface, an elastic sealing plate arranged on said doorbody and adapted to engage with the sealing surface of said stationary sealing frame, clamping means adapted to press said doorbody and said sealing plate against the respective abutting and sealing surfaces, means for transmitting the pressure exerted by said clamping means to said sealing plate and to said door body, and means for varying said pressure.

3. In a coke oven, a stationary door frame, a door body, abutting sealing surfaces on said door frame and sa1d door body, a stationary sealing frame mounted adjacent to the door frame and provided with an abutting sealin surface, an elastic sealing plate arranged on said door body and adapted to engage with said last-named sealing surface, clamping means adapted to press said door body and said sealing plate against the respective abutting and sealing surfaces, a frame rigidly fixed on said door body and adapted to be acted upon by said clamping means and presser screw bolts mounted on said last-named frame and adapted to act upon said sealing plate.-

4. In a coke oven, a stationary door frame, a door body, abutting sealing surfaces on merely serve to said door frame and said door body, a stationary sealing frame mounted adjacent to the door frame and provided with an abutting sealing surface, an elastic sealing plate arranged on said door body and adapted to engage with said last-named sealing surface, clamping means adapted to press said door body. and-said seal-ing plateagainst the respective abutting and sealing surfaces, a frame rigidly fixed on said door body and adapted to be acted upon by said clamping means, and plesser screw bolts mounted on and distributed over the perimeter of said last-named frame and adapted to act upon said sealing plate.

5. Ina coke oven, a stationary door frame, a door vbody, abutting sealing surfaces on said door frame and said door body, a stationary sealing frame mounted adjacent to the door frame and provided with an abutting sealing surface, an elastic sealing plate arranged on said door body and adapted to engage with said last-named sealing surface, clamping means adapted to press said door body and said sealing plate against the respective abutting and sealing surfaces, a frame rigidly fixed on said door body and adapted to be acted upon by said clamping means, presser screw bolts mounted on and distributed over the perimeter of said last-named frame and adapted to act upon said sealing plate, and means for transmitting to said sealing plate a portion of the pressure exerted upon said last-named frame, independently of said screw bolts.

6. In a coke, oven, a stationary door frame, a door body, abutting sealing surfaces on said door body and said door frame, a stationary sealing frame mounted adjacent to the door frame and an abutting sealing surface on said frame, an elastic sealing plate arranged on said door body and adapted to engage with said last-named sealing surface, clamping means adapted to press said door body and said sealing plate against the respective abut.- ting and sealing surfaces, a frame rigidly fixed on said door body and adapted to be acted upon by said clamping means, presser screw bolts mounted on and distributed over the perimeter of said last-named frame and adapted to act upon said sealing plate, rigid pro ections on said last-named frame and adapted to abut on said sealing plate, when the door is inserted, prior to said presser screw bolts.

7. In a coke oven, a stationary door frame, a door, metallic sealing members between the door and frame, said sealing members including a "metalplate and a metal sealing frame having an ed e and abutting sealing surface, one member ing secured to the door and the other to the door frame, and clamping means for bringing said members into sealing engagement. 7

8. In a coke oven, a stationary door frame,

a door, metallic sealin members between the door and frame, sai sealing members includin a metal plate and a metal sealing frame aving an edged and abutting sealing surface, one member being secure to the door and the other to the door frame, and clamping means for bringing said members into sealing engagement and'se arate means for ti hten ing the sealing mem rs.

l0 9. n a coke oven, a door frame provided with shoulders extending toward each other, adoor having an outer shell adjoining said shoulders, said door frame, shoulders and shell being arranged to define three sides of a chamber at each side of the door, metallic sealing members between the door and door frame adapted to close the fourth side of said chambers, said sealing members including a metal plate and a metal sealing frame having an edged and abutting sealing surface, one member being secured to the door and the other to the door frame, and clamping means for bringing said members into sealing engagement and separate means for tightening the sealing members.

CARL OTTO. 

